Little buggy things!

Just the other week i was cleaning out the coop and I found little bugs that looked like spiders but they were flat and tan and had pinchers!!! I didn't think much of it until i started reading on here and found they could be bad...what are they?!?!

Thank you that helps so very much! SO i am thinking they are not mites just crab spiders! they were like the size of half a penny and they are fast little buggers! I haven't seen them for a while but I will keep watching! Thanks for the help so far!